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<div class="title">SparseRef.h</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">// This file is part of Eigen, a lightweight C++ template library</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">// for linear algebra.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">// Copyright (C) 2015 Gael Guennebaud &lt;gael.guennebaud@inria.fr&gt;</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">// This Source Code Form is subject to the terms of the Mozilla</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">// Public License v. 2.0. If a copy of the MPL was not distributed</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160; </div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#ifndef EIGEN_SPARSE_REF_H</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#define EIGEN_SPARSE_REF_H</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160; </div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &quot;./InternalHeaderCheck.h&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160; </div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceEigen.html">Eigen</a> {</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160; </div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="keyword">enum</span> {</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;  <a class="code" href="namespaceEigen.html#a525790fecb4138e6d9db971e418d33c6abd3632507a3697fb48c77eff79851a74">StandardCompressedFormat</a> = 2 </div>
<div class="line"><a name="l00019"></a><span class="lineno"><a class="line" href="namespaceEigen.html#a525790fecb4138e6d9db971e418d33c6abd3632507a3697fb48c77eff79851a74">   19</a></span>&#160;};</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;  </div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="keyword">namespace </span>internal {</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160; </div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Derived&gt; <span class="keyword">class </span>SparseRefBase;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160; </div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> MatScalar, <span class="keywordtype">int</span> MatOptions, <span class="keyword">typename</span> MatIndex, <span class="keywordtype">int</span> Options_, <span class="keyword">typename</span> Str<span class="keywordtype">id</span>eType_&gt;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="keyword">struct </span>traits&lt;Ref&lt;SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options_, StrideType_&gt; &gt;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;  : <span class="keyword">public</span> traits&lt;SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt; &gt;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;{</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;  <span class="keyword">typedef</span> SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt; PlainObjectType;</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;  <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    Options = Options_,</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    Flags = traits&lt;PlainObjectType&gt;::Flags | <a class="code" href="group__flags.html#gaed0244284da47a2b8661261431173caf">CompressedAccessBit</a> | NestByRefBit</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;  };</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160; </div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Derived&gt; <span class="keyword">struct </span>match {</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;      StorageOrderMatch = PlainObjectType::IsVectorAtCompileTime || Derived::IsVectorAtCompileTime || ((PlainObjectType::Flags&amp;<a class="code" href="group__flags.html#gae4f56c2a60bbe4bd2e44c5b19cbe8762">RowMajorBit</a>)==(Derived::Flags&amp;<a class="code" href="group__flags.html#gae4f56c2a60bbe4bd2e44c5b19cbe8762">RowMajorBit</a>)),</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;      MatchAtCompileTime = (Derived::Flags&amp;<a class="code" href="group__flags.html#gaed0244284da47a2b8661261431173caf">CompressedAccessBit</a>) &amp;&amp; StorageOrderMatch</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    };</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    <span class="keyword">typedef</span> std::conditional_t&lt;MatchAtCompileTime,internal::true_type,internal::false_type&gt; type;</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;  };</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;  </div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;};</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160; </div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> MatScalar, <span class="keywordtype">int</span> MatOptions, <span class="keyword">typename</span> MatIndex, <span class="keywordtype">int</span> Options_, <span class="keyword">typename</span> Str<span class="keywordtype">id</span>eType_&gt;</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="keyword">struct </span>traits&lt;Ref&lt;const SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options_, StrideType_&gt; &gt;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;  : <span class="keyword">public</span> traits&lt;Ref&lt;SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options_, StrideType_&gt; &gt;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;{</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;  <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    Flags = (traits&lt;SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt; &gt;::Flags | <a class="code" href="group__flags.html#gaed0244284da47a2b8661261431173caf">CompressedAccessBit</a> | NestByRefBit) &amp; ~<a class="code" href="group__flags.html#gae2c323957f20dfdc6cb8f44428eaec1a">LvalueBit</a></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;  };</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;};</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160; </div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> MatScalar, <span class="keywordtype">int</span> MatOptions, <span class="keyword">typename</span> MatIndex, <span class="keywordtype">int</span> Options_, <span class="keyword">typename</span> Str<span class="keywordtype">id</span>eType_&gt;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="keyword">struct </span>traits&lt;Ref&lt;SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options_, StrideType_&gt; &gt;</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;  : <span class="keyword">public</span> traits&lt;SparseVector&lt;MatScalar,MatOptions,MatIndex&gt; &gt;</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;{</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;  <span class="keyword">typedef</span> SparseVector&lt;MatScalar,MatOptions,MatIndex&gt; PlainObjectType;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;  <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    Options = Options_,</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    Flags = traits&lt;PlainObjectType&gt;::Flags | <a class="code" href="group__flags.html#gaed0244284da47a2b8661261431173caf">CompressedAccessBit</a> | NestByRefBit</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;  };</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160; </div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Derived&gt; <span class="keyword">struct </span>match {</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;      MatchAtCompileTime = (Derived::Flags&amp;<a class="code" href="group__flags.html#gaed0244284da47a2b8661261431173caf">CompressedAccessBit</a>) &amp;&amp; Derived::IsVectorAtCompileTime</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    };</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    <span class="keyword">typedef</span> std::conditional_t&lt;MatchAtCompileTime,internal::true_type,internal::false_type&gt; type;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;  };</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160; </div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;};</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160; </div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> MatScalar, <span class="keywordtype">int</span> MatOptions, <span class="keyword">typename</span> MatIndex, <span class="keywordtype">int</span> Options_, <span class="keyword">typename</span> Str<span class="keywordtype">id</span>eType_&gt;</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="keyword">struct </span>traits&lt;Ref&lt;const SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options_, StrideType_&gt; &gt;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;  : <span class="keyword">public</span> traits&lt;Ref&lt;SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options_, StrideType_&gt; &gt;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;{</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;  <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    Flags = (traits&lt;SparseVector&lt;MatScalar,MatOptions,MatIndex&gt; &gt;::Flags | <a class="code" href="group__flags.html#gaed0244284da47a2b8661261431173caf">CompressedAccessBit</a> | NestByRefBit) &amp; ~<a class="code" href="group__flags.html#gae2c323957f20dfdc6cb8f44428eaec1a">LvalueBit</a></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;  };</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;};</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160; </div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Derived&gt;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="keyword">struct </span>traits&lt;SparseRefBase&lt;Derived&gt; &gt; : <span class="keyword">public</span> traits&lt;Derived&gt; {};</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160; </div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> Derived&gt; <span class="keyword">class </span>SparseRefBase</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;  : <span class="keyword">public</span> SparseMapBase&lt;Derived&gt;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;{</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160; </div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;  <span class="keyword">typedef</span> SparseMapBase&lt;Derived&gt; Base;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;  EIGEN_SPARSE_PUBLIC_INTERFACE(SparseRefBase)</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160; </div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;  SparseRefBase()</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    : Base(RowsAtCompileTime==<a class="code" href="namespaceEigen.html#ad81fa7195215a0ce30017dfac309f0b2">Dynamic</a>?0:RowsAtCompileTime,ColsAtCompileTime==<a class="code" href="namespaceEigen.html#ad81fa7195215a0ce30017dfac309f0b2">Dynamic</a>?0:ColsAtCompileTime, 0, 0, 0, 0, 0)</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;  {}</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;  </div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="keyword">protected</span>:</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160; </div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Expression&gt;</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;  <span class="keywordtype">void</span> construct(Expression&amp; expr)</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;  {</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    <span class="keywordflow">if</span>(expr.outerIndexPtr()==0)</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;      internal::construct_at&lt;Base&gt;(<span class="keyword">this</span>, expr.size(), expr.nonZeros(), expr.innerIndexPtr(), expr.valuePtr());</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;      internal::construct_at&lt;Base&gt;(<span class="keyword">this</span>, expr.rows(), expr.cols(), expr.nonZeros(), expr.outerIndexPtr(), expr.innerIndexPtr(), expr.valuePtr(), expr.innerNonZeroPtr());</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;  }</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;};</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160; </div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;} <span class="comment">// namespace internal</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160; </div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160; </div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;<span class="preprocessor">#ifndef EIGEN_PARSED_BY_DOXYGEN</span></div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> MatScalar, <span class="keywordtype">int</span> MatOptions, <span class="keyword">typename</span> MatIndex, <span class="keywordtype">int</span> Options, <span class="keyword">typename</span> Str<span class="keywordtype">id</span>eType&gt;</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="keyword">class </span>Ref&lt;SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType &gt;</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;  : <span class="keyword">public</span> internal::SparseRefBase&lt;Ref&lt;SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType &gt; &gt;</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;template&lt;typename SparseMatrixType, int Options&gt;</div>
<div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="classEigen_1_1Ref_3_01SparseMatrixType_00_01Options_01_4.html">  129</a></span>&#160;class <a class="code" href="classEigen_1_1Ref.html">Ref</a>&lt;SparseMatrixType, Options&gt;</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;  : <span class="keyword">public</span> SparseMapBase&lt;Derived,WriteAccessors&gt; <span class="comment">// yes, that&#39;s weird to use Derived here, but that works!</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;{</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    <span class="keyword">typedef</span> <a class="code" href="classEigen_1_1SparseMatrix.html">SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;</a> <a class="code" href="classEigen_1_1SparseMatrix.html">PlainObjectType</a>;</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    <span class="keyword">typedef</span> internal::traits&lt;Ref&gt; Traits;</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    <span class="keyword">template</span>&lt;<span class="keywordtype">int</span> OtherOptions&gt;</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    <span class="keyword">inline</span> <a class="code" href="classEigen_1_1Ref.html">Ref</a>(<span class="keyword">const</span> <a class="code" href="classEigen_1_1SparseMatrix.html">SparseMatrix&lt;MatScalar,OtherOptions,MatIndex&gt;</a>&amp; expr);</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    <span class="keyword">template</span>&lt;<span class="keywordtype">int</span> OtherOptions&gt;</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    <span class="keyword">inline</span> <a class="code" href="classEigen_1_1Ref.html">Ref</a>(<span class="keyword">const</span> <a class="code" href="classEigen_1_1Map.html">Map</a>&lt;<a class="code" href="classEigen_1_1SparseMatrix.html">SparseMatrix&lt;MatScalar,OtherOptions,MatIndex&gt;</a>&gt;&amp; expr);</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160; </div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    <span class="keyword">typedef</span> internal::SparseRefBase&lt;Ref&gt; <a class="code" href="classEigen_1_1SparseMatrixBase.html">Base</a>;</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    EIGEN_SPARSE_PUBLIC_INTERFACE(<a class="code" href="classEigen_1_1Ref.html">Ref</a>)</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160; </div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160; </div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    <span class="preprocessor">#ifndef EIGEN_PARSED_BY_DOXYGEN</span></div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;    <span class="keyword">template</span>&lt;<span class="keywordtype">int</span> OtherOptions&gt;</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;    <span class="keyword">inline</span> <a class="code" href="classEigen_1_1Ref.html">Ref</a>(<a class="code" href="classEigen_1_1SparseMatrix.html">SparseMatrix&lt;MatScalar,OtherOptions,MatIndex&gt;</a>&amp; expr)</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;    {</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;      EIGEN_STATIC_ASSERT(<span class="keywordtype">bool</span>(Traits::template match&lt;<a class="code" href="classEigen_1_1SparseMatrix.html">SparseMatrix&lt;MatScalar,OtherOptions,MatIndex&gt;</a> &gt;::MatchAtCompileTime), STORAGE_LAYOUT_DOES_NOT_MATCH);</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;      eigen_assert( ((Options &amp; <span class="keywordtype">int</span>(<a class="code" href="namespaceEigen.html#a525790fecb4138e6d9db971e418d33c6abd3632507a3697fb48c77eff79851a74">StandardCompressedFormat</a>))==0) || (expr.<a class="code" href="classEigen_1_1SparseMatrix.html#a837934b33a80fe996ff20500373d3a61">isCompressed</a>()) );</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;      Base::construct(expr.<a class="code" href="structEigen_1_1EigenBase.html#a1fbabe7f12bcbfba3b9a448b1f5e46fa">derived</a>());</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;    }</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160; </div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;    <span class="keyword">template</span>&lt;<span class="keywordtype">int</span> OtherOptions&gt;</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    <span class="keyword">inline</span> <a class="code" href="classEigen_1_1Ref.html">Ref</a>(<a class="code" href="classEigen_1_1Map.html">Map</a>&lt;<a class="code" href="classEigen_1_1SparseMatrix.html">SparseMatrix&lt;MatScalar,OtherOptions,MatIndex&gt;</a> &gt;&amp; expr)</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    {</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;      EIGEN_STATIC_ASSERT(<span class="keywordtype">bool</span>(Traits::template match&lt;<a class="code" href="classEigen_1_1SparseMatrix.html">SparseMatrix&lt;MatScalar,OtherOptions,MatIndex&gt;</a> &gt;::MatchAtCompileTime), STORAGE_LAYOUT_DOES_NOT_MATCH);</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;      eigen_assert( ((Options &amp; <span class="keywordtype">int</span>(<a class="code" href="namespaceEigen.html#a525790fecb4138e6d9db971e418d33c6abd3632507a3697fb48c77eff79851a74">StandardCompressedFormat</a>))==0) || (expr.<a class="code" href="classEigen_1_1SparseMatrix.html#a837934b33a80fe996ff20500373d3a61">isCompressed</a>()) );</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;      Base::construct(expr.<a class="code" href="structEigen_1_1EigenBase.html#a1fbabe7f12bcbfba3b9a448b1f5e46fa">derived</a>());</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    }</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160; </div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Derived&gt;</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    <span class="keyword">inline</span> <a class="code" href="classEigen_1_1Ref.html">Ref</a>(<span class="keyword">const</span> <a class="code" href="classEigen_1_1SparseCompressedBase.html">SparseCompressedBase&lt;Derived&gt;</a>&amp; expr)</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Derived&gt;</div>
<div class="line"><a name="l00167"></a><span class="lineno"><a class="line" href="classEigen_1_1Ref_3_01SparseMatrixType_00_01Options_01_4.html#a5a27af935f839a42d85421f5cce99a68">  167</a></span>&#160;    <span class="keyword">inline</span> <a class="code" href="classEigen_1_1Ref_3_01SparseMatrixType_00_01Options_01_4.html#a5a27af935f839a42d85421f5cce99a68">Ref</a>(<a class="code" href="classEigen_1_1SparseCompressedBase.html">SparseCompressedBase&lt;Derived&gt;</a>&amp; expr)</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;    <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    {</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;      EIGEN_STATIC_ASSERT(<span class="keywordtype">bool</span>(internal::is_lvalue&lt;Derived&gt;::value), THIS_EXPRESSION_IS_NOT_A_LVALUE__IT_IS_READ_ONLY);</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;      EIGEN_STATIC_ASSERT(<span class="keywordtype">bool</span>(Traits::template match&lt;Derived&gt;::MatchAtCompileTime), STORAGE_LAYOUT_DOES_NOT_MATCH);</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;      eigen_assert( ((Options &amp; <span class="keywordtype">int</span>(<a class="code" href="namespaceEigen.html#a525790fecb4138e6d9db971e418d33c6abd3632507a3697fb48c77eff79851a74">StandardCompressedFormat</a>))==0) || (expr.<a class="code" href="classEigen_1_1SparseCompressedBase.html#a837934b33a80fe996ff20500373d3a61">isCompressed</a>()) );</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;      Base::construct(expr.const_cast_derived());</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    }</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;};</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160; </div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;<span class="comment">// this is the const ref version</span></div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> MatScalar, <span class="keywordtype">int</span> MatOptions, <span class="keyword">typename</span> MatIndex, <span class="keywordtype">int</span> Options, <span class="keyword">typename</span> Str<span class="keywordtype">id</span>eType&gt;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;<span class="keyword">class </span>Ref&lt;const SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt;</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;  : <span class="keyword">public</span> internal::SparseRefBase&lt;Ref&lt;const SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt;</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;{</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;    <span class="keyword">typedef</span> SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt; TPlainObjectType;</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    <span class="keyword">typedef</span> internal::traits&lt;Ref&gt; Traits;</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160; </div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;    <span class="keyword">typedef</span> internal::SparseRefBase&lt;Ref&gt; Base;</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    EIGEN_SPARSE_PUBLIC_INTERFACE(Ref)</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160; </div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Derived&gt;</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    <span class="keyword">inline</span> Ref(<span class="keyword">const</span> SparseMatrixBase&lt;Derived&gt;&amp; expr) : m_hasCopy(false)</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;    {</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;      construct(expr.derived(), <span class="keyword">typename</span> Traits::template match&lt;Derived&gt;::type());</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;    }</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160; </div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;    <span class="keyword">inline</span> Ref(<span class="keyword">const</span> Ref&amp; other) : Base(other), m_hasCopy(false) {</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;      <span class="comment">// copy constructor shall not copy the m_object, to avoid unnecessary malloc and copy</span></div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;    }</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160; </div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> OtherRef&gt;</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;    <span class="keyword">inline</span> Ref(<span class="keyword">const</span> RefBase&lt;OtherRef&gt;&amp; other) : m_hasCopy(false) {</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;      construct(other.derived(), <span class="keyword">typename</span> Traits::template match&lt;OtherRef&gt;::type());</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    }</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160; </div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;    ~Ref() {</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;      <span class="keywordflow">if</span>(m_hasCopy) {</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;        internal::destroy_at(<span class="keyword">reinterpret_cast&lt;</span>TPlainObjectType*<span class="keyword">&gt;</span>(&amp;m_storage));</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;      }</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;    }</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160; </div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;  <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160; </div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Expression&gt;</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    <span class="keywordtype">void</span> construct(<span class="keyword">const</span> Expression&amp; expr,internal::true_type)</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    {</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;      <span class="keywordflow">if</span>((Options &amp; <span class="keywordtype">int</span>(<a class="code" href="namespaceEigen.html#a525790fecb4138e6d9db971e418d33c6abd3632507a3697fb48c77eff79851a74">StandardCompressedFormat</a>)) &amp;&amp; (!expr.isCompressed()))</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;      {</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;        TPlainObjectType* obj = internal::construct_at(<span class="keyword">reinterpret_cast&lt;</span>TPlainObjectType*<span class="keyword">&gt;</span>(&amp;m_storage), expr);</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;        m_hasCopy = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;        Base::construct(*obj);</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;      }</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;      <span class="keywordflow">else</span></div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;      {</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;        Base::construct(expr);</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;      }</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;    }</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160; </div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Expression&gt;</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    <span class="keywordtype">void</span> construct(<span class="keyword">const</span> Expression&amp; expr, internal::false_type)</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    {</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;      TPlainObjectType* obj = internal::construct_at(<span class="keyword">reinterpret_cast&lt;</span>TPlainObjectType*<span class="keyword">&gt;</span>(&amp;m_storage), expr);</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;      m_hasCopy = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;      Base::construct(*obj);</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;    }</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160; </div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;  <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;    <span class="keyword">typename</span> internal::aligned_storage&lt;<span class="keyword">sizeof</span>(TPlainObjectType), EIGEN_ALIGNOF(TPlainObjectType)&gt;::type m_storage;</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;    <span class="keywordtype">bool</span> m_hasCopy;</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;};</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160; </div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160; </div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160; </div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;<span class="preprocessor">#ifndef EIGEN_PARSED_BY_DOXYGEN</span></div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> MatScalar, <span class="keywordtype">int</span> MatOptions, <span class="keyword">typename</span> MatIndex, <span class="keywordtype">int</span> Options, <span class="keyword">typename</span> Str<span class="keywordtype">id</span>eType&gt;</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;<span class="keyword">class </span>Ref&lt;SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType &gt;</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;  : <span class="keyword">public</span> internal::SparseRefBase&lt;Ref&lt;SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType &gt; &gt;</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;template&lt;typename SparseVectorType&gt;</div>
<div class="line"><a name="l00257"></a><span class="lineno"><a class="line" href="classEigen_1_1Ref_3_01SparseVectorType_01_4.html">  257</a></span>&#160;class <a class="code" href="classEigen_1_1Ref.html">Ref</a>&lt;SparseVectorType&gt;</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;  : <span class="keyword">public</span> SparseMapBase&lt;Derived,WriteAccessors&gt;</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;{</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;    <span class="keyword">typedef</span> <a class="code" href="classEigen_1_1SparseVector.html">SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;</a> <a class="code" href="classEigen_1_1SparseVector.html">PlainObjectType</a>;</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;    <span class="keyword">typedef</span> internal::traits&lt;Ref&gt; Traits;</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;    <span class="keyword">template</span>&lt;<span class="keywordtype">int</span> OtherOptions&gt;</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    <span class="keyword">inline</span> <a class="code" href="classEigen_1_1Ref.html">Ref</a>(<span class="keyword">const</span> <a class="code" href="classEigen_1_1SparseVector.html">SparseVector&lt;MatScalar,OtherOptions,MatIndex&gt;</a>&amp; expr);</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160; </div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;    <span class="keyword">typedef</span> internal::SparseRefBase&lt;Ref&gt; <a class="code" href="classEigen_1_1SparseMatrixBase.html">Base</a>;</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;    EIGEN_SPARSE_PUBLIC_INTERFACE(<a class="code" href="classEigen_1_1Ref.html">Ref</a>)</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160; </div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;    <span class="preprocessor">#ifndef EIGEN_PARSED_BY_DOXYGEN</span></div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;    <span class="keyword">template</span>&lt;<span class="keywordtype">int</span> OtherOptions&gt;</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;    <span class="keyword">inline</span> <a class="code" href="classEigen_1_1Ref.html">Ref</a>(<a class="code" href="classEigen_1_1SparseVector.html">SparseVector&lt;MatScalar,OtherOptions,MatIndex&gt;</a>&amp; expr)</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;    {</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;      EIGEN_STATIC_ASSERT(<span class="keywordtype">bool</span>(Traits::template match&lt;<a class="code" href="classEigen_1_1SparseVector.html">SparseVector&lt;MatScalar,OtherOptions,MatIndex&gt;</a> &gt;::MatchAtCompileTime), STORAGE_LAYOUT_DOES_NOT_MATCH);</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;      Base::construct(expr.<a class="code" href="structEigen_1_1EigenBase.html#a1fbabe7f12bcbfba3b9a448b1f5e46fa">derived</a>());</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    }</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160; </div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Derived&gt;</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;    <span class="keyword">inline</span> <a class="code" href="classEigen_1_1Ref.html">Ref</a>(<span class="keyword">const</span> <a class="code" href="classEigen_1_1SparseCompressedBase.html">SparseCompressedBase&lt;Derived&gt;</a>&amp; expr)</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;    <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Derived&gt;</div>
<div class="line"><a name="l00283"></a><span class="lineno"><a class="line" href="classEigen_1_1Ref_3_01SparseVectorType_01_4.html#a125c83639030247f78157fa606c03f56">  283</a></span>&#160;    <span class="keyword">inline</span> <a class="code" href="classEigen_1_1Ref_3_01SparseVectorType_01_4.html#a125c83639030247f78157fa606c03f56">Ref</a>(<a class="code" href="classEigen_1_1SparseCompressedBase.html">SparseCompressedBase&lt;Derived&gt;</a>&amp; expr)</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;    <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;    {</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;      EIGEN_STATIC_ASSERT(<span class="keywordtype">bool</span>(internal::is_lvalue&lt;Derived&gt;::value), THIS_EXPRESSION_IS_NOT_A_LVALUE__IT_IS_READ_ONLY);</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;      EIGEN_STATIC_ASSERT(<span class="keywordtype">bool</span>(Traits::template match&lt;Derived&gt;::MatchAtCompileTime), STORAGE_LAYOUT_DOES_NOT_MATCH);</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;      Base::construct(expr.const_cast_derived());</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;    }</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;};</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160; </div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;<span class="comment">// this is the const ref version</span></div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> MatScalar, <span class="keywordtype">int</span> MatOptions, <span class="keyword">typename</span> MatIndex, <span class="keywordtype">int</span> Options, <span class="keyword">typename</span> Str<span class="keywordtype">id</span>eType&gt;</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;<span class="keyword">class </span>Ref&lt;const SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt;</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;  : <span class="keyword">public</span> internal::SparseRefBase&lt;Ref&lt;const SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt;</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;{</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;    <span class="keyword">typedef</span> SparseVector&lt;MatScalar,MatOptions,MatIndex&gt; TPlainObjectType;</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;    <span class="keyword">typedef</span> internal::traits&lt;Ref&gt; Traits;</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160; </div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;    <span class="keyword">typedef</span> internal::SparseRefBase&lt;Ref&gt; Base;</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;    EIGEN_SPARSE_PUBLIC_INTERFACE(Ref)</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160; </div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Derived&gt;</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;    <span class="keyword">inline</span> Ref(<span class="keyword">const</span> SparseMatrixBase&lt;Derived&gt;&amp; expr) : m_hasCopy(false)</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;    {</div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;      construct(expr.derived(), <span class="keyword">typename</span> Traits::template match&lt;Derived&gt;::type());</div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;    }</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160; </div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;    <span class="keyword">inline</span> Ref(<span class="keyword">const</span> Ref&amp; other) : Base(other), m_hasCopy(false) {</div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;      <span class="comment">// copy constructor shall not copy the m_object, to avoid unnecessary malloc and copy</span></div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;    }</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160; </div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> OtherRef&gt;</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;    <span class="keyword">inline</span> Ref(<span class="keyword">const</span> RefBase&lt;OtherRef&gt;&amp; other) : m_hasCopy(false) {</div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;      construct(other.derived(), <span class="keyword">typename</span> Traits::template match&lt;OtherRef&gt;::type());</div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;    }</div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160; </div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;    ~Ref() {</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;      <span class="keywordflow">if</span>(m_hasCopy) {</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;        internal::destroy_at(<span class="keyword">reinterpret_cast&lt;</span>TPlainObjectType*<span class="keyword">&gt;</span>(&amp;m_storage));</div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;      }</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;    }</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160; </div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;  <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160; </div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Expression&gt;</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;    <span class="keywordtype">void</span> construct(<span class="keyword">const</span> Expression&amp; expr,internal::true_type)</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;    {</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;      Base::construct(expr);</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;    }</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160; </div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Expression&gt;</div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;    <span class="keywordtype">void</span> construct(<span class="keyword">const</span> Expression&amp; expr, internal::false_type)</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;    {</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;      TPlainObjectType* obj = internal::construct_at(<span class="keyword">reinterpret_cast&lt;</span>TPlainObjectType*<span class="keyword">&gt;</span>(&amp;m_storage), expr);</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;      m_hasCopy = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;      Base::construct(*obj);</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;    }</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160; </div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;  <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;    <span class="keyword">typename</span> internal::aligned_storage&lt;<span class="keyword">sizeof</span>(TPlainObjectType), EIGEN_ALIGNOF(TPlainObjectType)&gt;::type m_storage;</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;    <span class="keywordtype">bool</span> m_hasCopy;</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;};</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160; </div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;<span class="keyword">namespace </span>internal {</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160; </div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;<span class="comment">// FIXME shall we introduce a general evaluatior_ref that we can specialize for any sparse object once, and thus remove this copy-pasta thing...</span></div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160; </div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> MatScalar, <span class="keywordtype">int</span> MatOptions, <span class="keyword">typename</span> MatIndex, <span class="keywordtype">int</span> Options, <span class="keyword">typename</span> Str<span class="keywordtype">id</span>eType&gt;</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;<span class="keyword">struct </span>evaluator&lt;Ref&lt;SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt;</div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;  : evaluator&lt;SparseCompressedBase&lt;Ref&lt;SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt; &gt;</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;{</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;  <span class="keyword">typedef</span> evaluator&lt;SparseCompressedBase&lt;Ref&lt;SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt; &gt; Base;</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;  <span class="keyword">typedef</span> Ref&lt;SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; XprType;</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;  evaluator() : Base() {}</div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;  <span class="keyword">explicit</span> evaluator(<span class="keyword">const</span> XprType &amp;mat) : Base(mat) {}</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;};</div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160; </div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> MatScalar, <span class="keywordtype">int</span> MatOptions, <span class="keyword">typename</span> MatIndex, <span class="keywordtype">int</span> Options, <span class="keyword">typename</span> Str<span class="keywordtype">id</span>eType&gt;</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;<span class="keyword">struct </span>evaluator&lt;Ref&lt;const SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt;</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;  : evaluator&lt;SparseCompressedBase&lt;Ref&lt;const SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt; &gt;</div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;{</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;  <span class="keyword">typedef</span> evaluator&lt;SparseCompressedBase&lt;Ref&lt;const SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt; &gt; Base;</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;  <span class="keyword">typedef</span> Ref&lt;const SparseMatrix&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; XprType;</div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;  evaluator() : Base() {}</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;  <span class="keyword">explicit</span> evaluator(<span class="keyword">const</span> XprType &amp;mat) : Base(mat) {}</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;};</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160; </div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> MatScalar, <span class="keywordtype">int</span> MatOptions, <span class="keyword">typename</span> MatIndex, <span class="keywordtype">int</span> Options, <span class="keyword">typename</span> Str<span class="keywordtype">id</span>eType&gt;</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;<span class="keyword">struct </span>evaluator&lt;Ref&lt;SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt;</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;  : evaluator&lt;SparseCompressedBase&lt;Ref&lt;SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt; &gt;</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;{</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;  <span class="keyword">typedef</span> evaluator&lt;SparseCompressedBase&lt;Ref&lt;SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt; &gt; Base;</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;  <span class="keyword">typedef</span> Ref&lt;SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; XprType;</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;  evaluator() : Base() {}</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;  <span class="keyword">explicit</span> evaluator(<span class="keyword">const</span> XprType &amp;mat) : Base(mat) {}</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;};</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160; </div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> MatScalar, <span class="keywordtype">int</span> MatOptions, <span class="keyword">typename</span> MatIndex, <span class="keywordtype">int</span> Options, <span class="keyword">typename</span> Str<span class="keywordtype">id</span>eType&gt;</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;<span class="keyword">struct </span>evaluator&lt;Ref&lt;const SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt;</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;  : evaluator&lt;SparseCompressedBase&lt;Ref&lt;const SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt; &gt;</div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;{</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;  <span class="keyword">typedef</span> evaluator&lt;SparseCompressedBase&lt;Ref&lt;const SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; &gt; &gt; Base;</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;  <span class="keyword">typedef</span> Ref&lt;const SparseVector&lt;MatScalar,MatOptions,MatIndex&gt;, Options, StrideType&gt; XprType;</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;  evaluator() : Base() {}</div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;  <span class="keyword">explicit</span> evaluator(<span class="keyword">const</span> XprType &amp;mat) : Base(mat) {}</div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;};</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160; </div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;}</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160; </div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;} <span class="comment">// end namespace Eigen</span></div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160; </div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;<span class="preprocessor">#endif </span><span class="comment">// EIGEN_SPARSE_REF_H</span></div>
<div class="ttc" id="aclassEigen_1_1Map_html"><div class="ttname"><a href="classEigen_1_1Map.html">Eigen::Map</a></div><div class="ttdoc">A matrix or vector expression mapping an existing array of data.</div><div class="ttdef"><b>Definition:</b> Map.h:98</div></div>
<div class="ttc" id="aclassEigen_1_1Ref_3_01SparseMatrixType_00_01Options_01_4_html_a5a27af935f839a42d85421f5cce99a68"><div class="ttname"><a href="classEigen_1_1Ref_3_01SparseMatrixType_00_01Options_01_4.html#a5a27af935f839a42d85421f5cce99a68">Eigen::Ref&lt; SparseMatrixType, Options &gt;::Ref</a></div><div class="ttdeci">Ref(SparseCompressedBase&lt; Derived &gt; &amp;expr)</div><div class="ttdef"><b>Definition:</b> SparseRef.h:167</div></div>
<div class="ttc" id="aclassEigen_1_1Ref_3_01SparseVectorType_01_4_html_a125c83639030247f78157fa606c03f56"><div class="ttname"><a href="classEigen_1_1Ref_3_01SparseVectorType_01_4.html#a125c83639030247f78157fa606c03f56">Eigen::Ref&lt; SparseVectorType &gt;::Ref</a></div><div class="ttdeci">Ref(SparseCompressedBase&lt; Derived &gt; &amp;expr)</div><div class="ttdef"><b>Definition:</b> SparseRef.h:283</div></div>
<div class="ttc" id="aclassEigen_1_1Ref_html"><div class="ttname"><a href="classEigen_1_1Ref.html">Eigen::Ref</a></div><div class="ttdoc">A matrix or vector expression mapping an existing expression.</div><div class="ttdef"><b>Definition:</b> Ref.h:285</div></div>
<div class="ttc" id="aclassEigen_1_1SparseCompressedBase_html"><div class="ttname"><a href="classEigen_1_1SparseCompressedBase.html">Eigen::SparseCompressedBase</a></div><div class="ttdoc">Common base class for sparse [compressed]-{row|column}-storage format.</div><div class="ttdef"><b>Definition:</b> SparseCompressedBase.h:40</div></div>
<div class="ttc" id="aclassEigen_1_1SparseCompressedBase_html_a837934b33a80fe996ff20500373d3a61"><div class="ttname"><a href="classEigen_1_1SparseCompressedBase.html#a837934b33a80fe996ff20500373d3a61">Eigen::SparseCompressedBase::isCompressed</a></div><div class="ttdeci">bool isCompressed() const</div><div class="ttdef"><b>Definition:</b> SparseCompressedBase.h:109</div></div>
<div class="ttc" id="aclassEigen_1_1SparseMatrixBase_html"><div class="ttname"><a href="classEigen_1_1SparseMatrixBase.html">Eigen::SparseMatrixBase</a></div><div class="ttdoc">Base class of any sparse matrices or sparse expressions.</div><div class="ttdef"><b>Definition:</b> SparseMatrixBase.h:30</div></div>
<div class="ttc" id="aclassEigen_1_1SparseMatrix_html"><div class="ttname"><a href="classEigen_1_1SparseMatrix.html">Eigen::SparseMatrix</a></div><div class="ttdoc">A versatible sparse matrix representation.</div><div class="ttdef"><b>Definition:</b> SparseMatrix.h:100</div></div>
<div class="ttc" id="aclassEigen_1_1SparseMatrix_html_a837934b33a80fe996ff20500373d3a61"><div class="ttname"><a href="classEigen_1_1SparseMatrix.html#a837934b33a80fe996ff20500373d3a61">Eigen::SparseMatrix::isCompressed</a></div><div class="ttdeci">bool isCompressed() const</div><div class="ttdef"><b>Definition:</b> SparseCompressedBase.h:109</div></div>
<div class="ttc" id="aclassEigen_1_1SparseVector_html"><div class="ttname"><a href="classEigen_1_1SparseVector.html">Eigen::SparseVector</a></div><div class="ttdoc">a sparse vector class</div><div class="ttdef"><b>Definition:</b> SparseVector.h:68</div></div>
<div class="ttc" id="agroup__flags_html_gae2c323957f20dfdc6cb8f44428eaec1a"><div class="ttname"><a href="group__flags.html#gae2c323957f20dfdc6cb8f44428eaec1a">Eigen::LvalueBit</a></div><div class="ttdeci">const unsigned int LvalueBit</div><div class="ttdef"><b>Definition:</b> Constants.h:146</div></div>
<div class="ttc" id="agroup__flags_html_gae4f56c2a60bbe4bd2e44c5b19cbe8762"><div class="ttname"><a href="group__flags.html#gae4f56c2a60bbe4bd2e44c5b19cbe8762">Eigen::RowMajorBit</a></div><div class="ttdeci">const unsigned int RowMajorBit</div><div class="ttdef"><b>Definition:</b> Constants.h:68</div></div>
<div class="ttc" id="agroup__flags_html_gaed0244284da47a2b8661261431173caf"><div class="ttname"><a href="group__flags.html#gaed0244284da47a2b8661261431173caf">Eigen::CompressedAccessBit</a></div><div class="ttdeci">const unsigned int CompressedAccessBit</div><div class="ttdef"><b>Definition:</b> Constants.h:193</div></div>
<div class="ttc" id="anamespaceEigen_html"><div class="ttname"><a href="namespaceEigen.html">Eigen</a></div><div class="ttdoc">Namespace containing all symbols from the Eigen library.</div><div class="ttdef"><b>Definition:</b> Core:139</div></div>
<div class="ttc" id="anamespaceEigen_html_a525790fecb4138e6d9db971e418d33c6abd3632507a3697fb48c77eff79851a74"><div class="ttname"><a href="namespaceEigen.html#a525790fecb4138e6d9db971e418d33c6abd3632507a3697fb48c77eff79851a74">Eigen::StandardCompressedFormat</a></div><div class="ttdeci">@ StandardCompressedFormat</div><div class="ttdef"><b>Definition:</b> SparseRef.h:18</div></div>
<div class="ttc" id="anamespaceEigen_html_ad81fa7195215a0ce30017dfac309f0b2"><div class="ttname"><a href="namespaceEigen.html#ad81fa7195215a0ce30017dfac309f0b2">Eigen::Dynamic</a></div><div class="ttdeci">const int Dynamic</div><div class="ttdef"><b>Definition:</b> Constants.h:24</div></div>
<div class="ttc" id="astructEigen_1_1EigenBase_html_a1fbabe7f12bcbfba3b9a448b1f5e46fa"><div class="ttname"><a href="structEigen_1_1EigenBase.html#a1fbabe7f12bcbfba3b9a448b1f5e46fa">Eigen::EigenBase::derived</a></div><div class="ttdeci">Derived &amp; derived()</div><div class="ttdef"><b>Definition:</b> EigenBase.h:48</div></div>
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